Iterative clipping and filtering based on discrete cosine transform/inverse discrete cosine transform for intensity modulator direct detection optical orthogonal frequency division multiplexing system

Fall Mangone; Jin Tang; Ming Chen; Jiangnan Xiao; Li Fan; Lin Chen

doi:10.1117/1.OE.52.6.065001

3 June 2013 Iterative clipping and filtering based on discrete cosine transform/inverse discrete cosine transform for intensity modulator direct detection optical orthogonal frequency division multiplexing system

Fall Mangone, Jin Tang, Ming Chen, Jiangnan Xiao, Li Fan, Lin Chen

Author Affiliations +

Optical Engineering, Vol. 52, Issue 6, 065001 (June 2013). https://doi.org/10.1117/1.OE.52.6.065001

Abstract

Iterative clipping and filtering (ICF) is a useful technique to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. However, the classical ICF with Fast Fourier Transform/Inverse Fast Fourier Transform requires much iteration to approach a specified PAPR threshold in the complementary cumulative distribution function. To reduce the nonlinear distortion in both electrical and optical devices and in the optical fiber, we propose a novel ICF based on discrete cosine transform/inverse discrete cosine transform to reduce the PAPR in an intensity modulator and direct detection (IM/DD) optical OFDM system. Furthermore, the new technique considerably improves bit error rate (BER) and reduces the PAPR with just few iterations. The experimental results show that the receiver sensitivity at a BER of 1×10 ⁻³ for a 2.5-Gbytes/s OFDM signal and after 200-km standard single-mode fiber transmission has been improved by 1.1, 2.3, and 3.6 dBm with launch powers of 6, 8, and 12 dBm respectively.

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Fall Mangone, Jin Tang, Ming Chen, Jiangnan Xiao, Li Fan, and Lin Chen "Iterative clipping and filtering based on discrete cosine transform/inverse discrete cosine transform for intensity modulator direct detection optical orthogonal frequency division multiplexing system," Optical Engineering 52(6), 065001 (3 June 2013). https://doi.org/10.1117/1.OE.52.6.065001

Published: 3 June 2013

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